beforeSet

Called when a form is submitted that references this bean before any set
methods have been called, i.e. first thing in processing the form data.

If multiple form handlers exist for the same form, they are called
in an order based on the priority of the input tag that references
the form.

Returns:

true if form processing should continue and the requested
URL should be served, false if it should be aborted. If false is
returned, you typically have already completed the request
with a redirect or by sending output to the output stream.

afterSet

Called after all form arguments have been submitted, before the
page is serviced (or rendered). If the a form is submitted to the
same page it is rendered, this method is called before the beforeGet
method of the DropletFormHandler.

This method is suitable for doing form submit processing on forms
that do not have a submit button (i.e. have only a single text field)
or for cleaning up after the form has been submitted.

Returns:

true if request processing should continue and the requested
URL should be served, false if it should be aborted. If false is
returned, you typically have already completed the request
with a redirect or by sending output to the output stream.

handleUncheckedFormException

This is called if an unchecked exception occurred when getting or setting
the values of the form. This method is called once
for each exception that occurs when processing the setX, getX or handle
method.